science 7th ch19

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Across
  1. 5. when the water vapor cools and becomes liquid
  2. 8. is when the water leaves the earth through evaporation and it enters the atmosphere as a gas called water vapor
  3. 10. when the water in the clouds returns to the ground by falling
Down
  1. 1. Cycle: a way the carbon moves throughout the atmosphere and living organisms
  2. 2. dead organisms are decomposed by organisms such as bacteria and fungi.
  3. 3. Respiration: takes oxygen from the atmosphere and releases carbon dioxide
  4. 4. Cycle: the movement of oxygen from the atmosphere into living organisms and back to the atmosphere
  5. 6. Cycle: nitrogen cycles through the environment
  6. 7. Fuels: contain large amounts of carbon when burned the carbon reacts with the oxygen to form carbon dioxide.
  7. 9. they remove carbon dioxide from the atmosphere to make glucose and release oxygen back into the atmosphere.